Home / 2,353.12-3,247.36-1,290.96

Finding the Fourth Proportional to 2,353.12, 3,247.36 and 1,290.96

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Solution

The fourth proportional to 2,353.12, 3,247.36 and 1,290.96 is: 1,781.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,353.12 : 3,247.36 = 1,290.96 : x
  2. Step 2: Convert to fraction form
    2,353.12/3,247.36 = 1,290.96/x
  3. Step 3: Cross multiply
    2,353.12x = 3,247.36 × 1,290.96
  4. Step 4: Simplify right side
    2,353.12x = 4,192,211.87
  5. Step 5: Solve for x
    x = 4,192,211.87/2,353.12
  6. Step 6: Final answer
    x = 1,781.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.